Publications

The Energy Transition

The Biogas Handbook: Science, production and applications.

Wellinger, Murphy and Baxter (2013) The Biogas Handbook: Science, production and applications. Oxford: Woodhead Publishing. [Details]

All the journal publications [1-147]

  1. Bose, A., R. O’Shea, R. Lin, and J.D. Murphy, A perspective on novel cascading algal biomethane biorefinery systems. Bioresource Technology, 2020: p. 123027. https://doi.org/https://doi.org/10.1016/j.biortech.2020.123027
  2. Kang, X., R. Lin, R. O’Shea, C. Deng, L. Li, Y. Sun, and J.D. Murphy, A perspective on decarbonizing whiskey using renewable gaseous biofuel in a circular bioeconomy process. Journal of Cleaner Production, 2020. https://doi.org/10.1016/j.jclepro.2020.120211
  3. Voelklein, M.A., D. Rusmanis, and J.D. Murphy, Biological methanation: Strategies for in-situ and ex-situ upgrading in anaerobic digestion. Applied Energy, 2019. 235: p. 1061-1071. https://doi.org/10.1016/j.apenergy.2018.11.006
  4. Sun, C.H., A. Xia, Q. Fu, Y. Huang, R.C. Lin, and J.D. Murphy, Effects of pre-treatment and biological acidification on fermentative hydrogen and methane co-production. Energy Conversion and Management, 2019. 185: p. 431-441. https://doi.org/10.1016/j.enconman.2019.01.118
  5. Rusmanis, D., R. O’Shea, D.M. Wall, and J.D. Murphy, Biological hydrogen methanation systems ? an overview of design and efficiency. Bioengineered, 2019. 10(1): p. 604-634. https://doi.org/10.1080/21655979.2019.1684607
  6. Rajendran, K., B. O’Gallachoir, and J.D. Murphy, The combined role of policy and incentives in promoting cost efficient decarbonisation of energy: A case study for biomethane. Journal of Cleaner Production, 2019. 219: p. 278-290. https://doi.org/10.1016/j.jclepro.2019.01.298
  7. Rajendran, K., J.D. Browne, and J.D. Murphy, What is the level of incentivisation required for biomethane upgrading technologies with carbon capture and reuse? Renewable Energy, 2019. 133: p. 951-963. https://doi.org/10.1016/j.renene.2018.10.091
  8. McDonagh, S., D.M. Wall, P. Deane, and J.D. Murphy, The effect of electricity markets, and renewable electricity penetration, on the levelised cost of energy of an advanced electro-fuel system incorporating carbon capture and utilisation. Renewable Energy, 2019. 131: p. 364-371. https://doi.org/10.1016/j.renene.2018.07.058
  9. McDonagh, S., P. Deane, K. Rajendran, and J.D. Murphy, Are electrofuels a sustainable transport fuel? Analysis of the effect of controls on carbon, curtailment, and cost of hydrogen. Applied Energy, 2019. 247: p. 716-730. https://doi.org/10.1016/j.apenergy.2019.04.060
  10. Long, A. and J.D. Murphy, Can green gas certificates allow for the accurate quantification of the energy supply and sustainability of biomethane from a range of sources for renewable heat and or transport? Renewable & Sustainable Energy Reviews, 2019. 115. https://doi.org/10.1016/j.rser.2019.109347
  11. Lin, R.C., C. Deng, L.K. Ding, A. Bose, and J.D. Murphy, Improving gaseous biofuel production from seaweed Saccharina latissima: The effect of hydrothermal pretreatment on energy efficiency. Energy Conversion and Management, 2019. 196: p. 1385-1394. https://doi.org/10.1016/j.enconman.2019.06.044
  12. Himanshu, H., J.D. Murphy, J.J. Lenehan, and P. O’Kiely, Impacts of characteristics of grass silage and cattle slurry feedstocks on the cost of methane production. Biofuels Bioproducts & Biorefining-Biofpr, 2019. 13(1): p. 129-139. https://doi.org/10.1002/bbb.1947
  13. Gil-Carrera, L., J.D. Browne, I. Kilgallon, and J.D. Murphy, Feasibility study of an off-grid biomethane mobile solution for agri-waste. Applied Energy, 2019. 239: p. 471-481. https://doi.org/10.1016/j.apenergy.2019.01.141
  14. FitzGerald, J.A., D.M. Wall, S.A. Jackson, J.D. Murphy, and A.D.W. Dobson, Trace element supplementation is associated with increases in fermenting bacteria in biogas mono-digestion of grass silage. Renewable Energy, 2019. 138: p. 980-986. https://doi.org/10.1016/j.renene.2019.02.051
  15. Deng, C., R.C. Lin, J. Cheng, and J.D. Murphy, Can acid pre-treatment enhance biohydrogen and biomethane production from grass silage in single-stage and two-stage fermentation processes? Energy Conversion and Management, 2019. 195: p. 738-747. https://doi.org/10.1016/j.enconman.2019.05.044
  16. Bose, A., R.C. Lin, K. Rajendran, R. O’Shea, A. Xia, and J.D. Murphy, How to optimise photosynthetic biogas upgrading: a perspective on system design and microalgae selection. Biotechnology Advances, 2019. 37(8). https://doi.org/10.1016/j.biotechadv.2019.107444
  17. Vo, T.T.Q., D.M. Wall, D. Ring, K. Rajendran, and J.D. Murphy, Techno-economic analysis of biogas upgrading via amine scrubber, carbon capture and ex-situ methanation. Applied Energy, 2018. 212: p. 1191-1202. https://doi.org/10.1016/j.apenergy.2017.12.099
  18. Vo, T.T.Q., K. Rajendran, and J.D. Murphy, Can power to methane systems be sustainable and can they improve the carbon intensity of renewable methane when used to upgrade biogas produced from grass and slurry? Applied Energy, 2018. 228: p. 1046-1056. https://doi.org/10.1016/j.apenergy.2018.06.139
  19. Tabassum, M.R., A. Xia, and J.D. Murphy, Biomethane production from various segments of brown seaweed. Energy Conversion and Management, 2018. 174: p. 855-862. https://doi.org/10.1016/j.enconman.2018.08.084
  20. Sun, C.H., A. Xia, Q. Liao, G. Kumar, and J.D. Murphy, Biomass and Bioenergy: Current State, in Bioreactors for Microbial Biomass and Energy Conversion, Q. Liao, et al., Editors. 2018. p. 3-37.
  21. Sun, C.H., A. Xia, Q. Liao, Q. Fu, Y. Huang, X. Zhu, P.F. Wei, R.C. Lin, and J.D. Murphy, Improving production of volatile fatty acids and hydrogen from microalgae and rice residue: Effects of physicochemical characteristics and mix ratios. Applied Energy, 2018. 230: p. 1082-1092. https://doi.org/10.1016/j.apenergy.2018.09.066
  22. McDonagh, S., R. O’Shea, D.M. Wall, J.P. Deane, and J.D. Murphy, Modelling of a power-to-gas system to predict the levelised cost of energy of an advanced renewable gaseous transport fuel. Applied Energy, 2018. 215: p. 444-456. https://doi.org/10.1016/j.apenergy.2018.02.019
  23. Lin, R.C., C. Deng, J. Cheng, A. Xia, P.N.L. Lens, S.A. Jackson, A.D.W. Dobson, and J.D. Murphy, Graphene Facilitates Biomethane Production from Protein-Derived Glycine in Anaerobic Digestion. Iscience, 2018. 10: p. 158-+. https://doi.org/10.1016/j.isci.2018.11.030
  24. Lin, R.C., J. Cheng, and J.D. Murphy, Inhibition of thermochemical treatment on biological hydrogen and methane co-production from algae-derived glucose/glycine. Energy Conversion and Management, 2018. 158: p. 201-209. https://doi.org/10.1016/j.enconman.2017.12.052
  25. Lin, R.C., J. Cheng, L.K. Ding, and J.D. Murphy, Improved efficiency of anaerobic digestion through direct interspecies electron transfer at mesophilic and thermophilic temperature ranges. Chemical Engineering Journal, 2018. 350: p. 681-691. https://doi.org/10.1016/j.cej.2018.05.173
  26. Himanshu, H., J.D. Murphy, J. Grant, and P. O’Kiely, Antagonistic effects on biogas and methane output when co-digesting cattle and pig slurries with grass silage in in vitro batch anaerobic digestion. Biomass & Bioenergy, 2018. 109: p. 190-198. https://doi.org/10.1016/j.biombioe.2017.12.027
  27. Himanshu, H., J.D. Murphy, J. Grant, and P. O’Kiely, Synergies from co-digesting grass or clover silages with cattle slurry in in vitro batch anaerobic digestion. Renewable Energy, 2018. 127: p. 474-480. https://doi.org/10.1016/j.renene.2018.04.086
  28. Herrmann, C., P. Ramm, and J.D. Murphy, The Relationship Between Bioreactor Design and Feedstock for Optimal Biogas Production, in Bioreactors for Microbial Biomass and Energy Conversion, Q. Liao, et al., Editors. 2018. p. 163-197.
  29. Gutierrez, E.C., D.M. Wall, R. O’Shea, R.M. Novelo, M.M. Gomez, and J.D. Murphy, An economic and carbon analysis of biomethane production from food waste to be used as a transport fuel in Mexico. Journal of Cleaner Production, 2018. 196: p. 852-862. https://doi.org/10.1016/j.jclepro.2018.06.051
  30. Ding, L.K., E.C. Gutierrez, J. Cheng, A. Xia, R. O’Shea, A.J. Guneratnam, and J.D. Murphy, Assessment of continuous fermentative hydrogen and methane co-production using macro- and micro-algae with increasing organic loading rate. Energy, 2018. 151: p. 760-770. https://doi.org/10.1016/j.energy.2018.03.103
  31. Wall, D.M., S. McDonagh, and J.D. Murphy, Cascading biomethane energy systems for sustainable green gas production in a circular economy. Bioresource Technology, 2017. 243: p. 1207-1215. https://doi.org/10.1016/j.biortech.2017.07.115
  32. Voelklein, M.A., R.O. Shea, A. Jacob, and J.D. Murphy, Role of trace elements in single and two-stage digestion of food waste at high organic loading rates. Energy, 2017. 121: p. 185-192. https://doi.org/10.1016/j.energy.2017.01.009
  33. Vo, T.T.Q., A. Xia, D.M. Wall, and J.D. Murphy, Use of surplus wind electricity in Ireland to produce compressed renewable gaseous transport fuel through biological power to gas systems. Renewable Energy, 2017. 105: p. 495-504. https://doi.org/10.1016/j.renene.2016.12.084
  34. Vo, T.T.Q., A. Xia, F. Rogan, D.M. Wall, and J.D. Murphy, Sustainability assessment of large-scale storage technologies for surplus electricity using group multi-criteria decision analysis. Clean Technologies and Environmental Policy, 2017. 19(3): p. 689-703. https://doi.org/10.1007/s10098-016-1250-8
  35. Tabassum, M.R., A. Xia, and J.D. Murphy, Potential of seaweed as a feedstock for renewable gaseous fuel production in Ireland. Renewable & Sustainable Energy Reviews, 2017. 68: p. 136-146. https://doi.org/10.1016/j.rser.2016.09.111
  36. Tabassum, M.R., A. Xia, and J.D. Murphy, Comparison of pre-treatments to reduce salinity and enhance biomethane yields of Laminaria digitata harvested in different seasons. Energy, 2017. 140: p. 546-551. https://doi.org/10.1016/j.energy.2017.08.070
  37. Singlitico, A., K. Dussan, R. O’Shea, D. Wall, J. Goggins, J. Murphy, and R.F.D. Monaghan, TECHNO-ECONOMIC OPTIMISATION OF COMBINED ANAEROBIC DIGESTION AND GASIFICATION OF FOOD WASTE AS PART OF AN INTEGRATED WASTE MANAGEMENT AND ENERGY SYSTEM. Papers of the 25th European Biomass Conference, ed. L. Ek, et al. 2017. 96-105.
  38. O’Shea, R., D.M. Wall, and J.D. Murphy, An energy and greenhouse gas comparison of centralised biogas production with road haulage of pig slurry, and decentralised biogas production with biogas transportation in a low-pressure pipe network. Applied Energy, 2017. 208: p. 108-122. https://doi.org/10.1016/j.apenergy.2017.10.045
  39. O’Shea, R., D.M. Wall, S. McDonagh, and J.D. Murphy, The potential of power to gas to provide green gas utilising existing CO2 sources from industries, distilleries and wastewater treatment facilities. Renewable Energy, 2017. 114: p. 1090-1100. https://doi.org/10.1016/j.renene.2017.07.097
  40. O’Shea, R., D.M. Wall, I. Kilgallon, J.D. Browne, and J.D. Murphy, Assessing the total theoretical, and financially viable, resource of biomethane for injection to a natural gas network in a region. Applied Energy, 2017. 188: p. 237-256. https://doi.org/10.1016/j.apenergy.2016.11.121
  41. Lin, R.C., J. Cheng, J.B. Zhang, J.H. Zhou, K.F. Cen, and J.D. Murphy, Boosting biomethane yield and production rate with graphene: The potential of direct interspecies electron transfer in anaerobic digestion. Bioresource Technology, 2017. 239: p. 345-352. https://doi.org/10.1016/j.biortech.2017.05.017
  42. Lin, R.C., J. Cheng, and J.D. Murphy, Unexpectedly low biohydrogen yields in co-fermentation of acid pretreated cassava residue and swine manure. Energy Conversion and Management, 2017. 151: p. 553-561. https://doi.org/10.1016/j.enconman.2017.09.006
  43. Himanshu, H., M.A. Voelklein, J.D. Murphy, J. Grant, and P. O’Kiely, Factors controlling headspace pressure in a manual manometric BMP method can be used to produce a methane output comparable to AMPTS. Bioresource Technology, 2017. 238: p. 633-642. https://doi.org/10.1016/j.biortech.2017.04.088
  44. Guneratnam, A.J., A. Xia, and J.D. Murphy, Comparative study of single- and two-stage fermentation of the brown seaweed Laminaria digitata. Energy Conversion and Management, 2017. 148: p. 405-412. https://doi.org/10.1016/j.enconman.2017.06.013
  45. Guneratnam, A.J., E. Ahern, J.A. FitzGerald, S.A. Jackson, A. Xia, A.D.W. Dobson, and J.D. Murphy, Study of the performance of a thermophilic biological methanation system. Bioresource Technology, 2017. 225: p. 308-315. https://doi.org/10.1016/j.biortech.2016.11.066
  46. Czyrnek-Deletre, M.M., B.M. Smyth, and J.D. Murphy, Beyond carbon and energy: The challenge in setting guidelines for life cycle assessment of biofuel systems. Renewable Energy, 2017. 105: p. 436-448. https://doi.org/10.1016/j.renene.2016.11.043
  47. Czyrnek-Deletre, M.M., S. Rocca, A. Agostini, J. Giuntoli, and J.D. Murphy, Life cycle assessment of seaweed biomethane, generated from seaweed sourced from integrated multi-trophic aquaculture in temperate oceanic climates. Applied Energy, 2017. 196: p. 34-50. https://doi.org/10.1016/j.apenergy.2017.03.129
  48. Xia, A. and J.D. Murphy, Microalgal Cultivation in Treating Liquid Digestate from Biogas Systems. Trends in Biotechnology, 2016. 34(4): p. 264-275. https://doi.org/10.1016/j.tibtech.2015.12.010
  49. Xia, A., A. Jacob, M.R. Tabassum, C. Herrmann, and J.D. Murphy, Production of hydrogen, ethanol and volatile fatty acids through co-fermentation of macro- and micro-algae. Bioresource Technology, 2016. 205: p. 118-125. https://doi.org/10.1016/j.biortech.2016.01.025
  50. Xia, A., A. Jacob, C. Herrmann, and J.D. Murphy, Fermentative bio-hydrogen production from galactose. Energy, 2016. 96: p. 346-354. https://doi.org/10.1016/j.energy.2015.12.087
  51. Xia, A., J. Cheng, and J.D. Murphy, Innovation in biological production and upgrading of methane and hydrogen for use as gaseous transport biofuel. Biotechnology Advances, 2016. 34(5): p. 451-472. https://doi.org/10.1016/j.biotechadv.2015.12.009
  52. Wall, D.M., E. Allen, R. O’Shea, P. O’Kiely, and J.D. Murphy, Investigating two-phase digestion of grass silage for demand-driven biogas applications: Effect of particle size and rumen fluid addition. Renewable Energy, 2016. 86: p. 1215-1223. https://doi.org/10.1016/j.renene.2015.09.049
  53. Voelklein, M.A., D. Rusmanis, and J.D. Murphy, Increased loading rates and specific methane yields facilitated by digesting grass silage at thermophilic rather than mesophilic temperatures. Bioresource Technology, 2016. 216: p. 486-493. https://doi.org/10.1016/j.biortech.2016.05.109
  54. Voelklein, M.A., A. Jacob, R.O. Shea, and J.D. Murphy, Assessment of increasing loading rate on two-stage digestion of food waste. Bioresource Technology, 2016. 202: p. 172-180. https://doi.org/10.1016/j.biortech.2015.12.001
  55. Tabassum, M.R., A. Xia, and J.D. Murphy, The effect of seasonal variation on biomethane production from seaweed and on application as a gaseous transport biofuel. Bioresource Technology, 2016. 209: p. 213-219. https://doi.org/10.1016/j.biortech.2016.02.120
  56. Tabassum, M.R., A. Xia, and J.D. Murphy, Seasonal variation of chemical composition and biomethane production from the brown seaweed Ascophyllum nodosum. Bioresource Technology, 2016. 216: p. 219-226. https://doi.org/10.1016/j.biortech.2016.05.071
  57. Tabassum, M.R., D.M. Wall, and J.D. Murphy, Biogas production generated through continuous digestion of natural and cultivated seaweeds with dairy slurry. Bioresource Technology, 2016. 219: p. 228-238. https://doi.org/10.1016/j.biortech.2016.07.127
  58. Sheil, T.S., D.P. Wall, N. Culleton, J. Murphy, J. Grant, and S.T.J. Lalor, Long-term effects of phosphorus fertilizer on soil test phosphorus, phosphorus uptake and yield of perennial ryegrass. Journal of Agricultural Science, 2016. 154(6): p. 1068-1081. https://doi.org/10.1017/s0021859615001100
  59. O’Shea, R., D. Wall, and J.D. Murphy, Modelling a demand driven biogas system for production of electricity at peak demand and for production of biomethane at other times. Bioresource Technology, 2016. 216: p. 238-249. https://doi.org/10.1016/j.biortech.2016.05.050
  60. O’Shea, R., D. Wall, I. Kilgallon, and J.D. Murphy, Assessment of the impact of incentives and of scale on the build order and location of biomethane facilities and the feedstock they utilise. Applied Energy, 2016. 182: p. 394-408. https://doi.org/10.1016/j.apenergy.2016.08.063
  61. O’Shea, R., I. Kilgallon, D. Wall, and J.D. Murphy, Quantification and location of a renewable gas industry based on digestion of wastes in Ireland. Applied Energy, 2016. 175: p. 229-239. https://doi.org/10.1016/j.apenergy.2016.05.011
  62. Mulholland, E., R.S.K. O’Shea, J.D. Murphy, and B.P.O. Gallachoir, Low carbon pathways for light goods vehicles in Ireland. Research in Transportation Economics, 2016. 57: p. 53-62. https://doi.org/10.1016/j.retrec.2016.10.002
  63. Miandad, R., A.S. Nizami, M. Rehan, M.A. Barakat, M.I. Khan, A. Mustafa, I.M.I. Ismail, and J.D. Murphy, Influence of temperature and reaction time on the conversion of polystyrene waste to pyrolysis liquid oil. Waste Management, 2016. 58: p. 250-259. https://doi.org/10.1016/j.wasman.2016.09.023
  64. Herrmann, C., N. Kalita, D. Wall, A. Xia, and J.D. Murphy, Optimised biogas production from microalgae through co-digestion with carbon-rich co-substrates. Bioresource Technology, 2016. 214: p. 328-337. https://doi.org/10.1016/j.biortech.2016.04.119
  65. Gutierrez, E.C., A. Xia, and J.D. Murphy, Can slurry biogas systems be cost effective without subsidy in Mexico? Renewable Energy, 2016. 95: p. 22-30. https://doi.org/10.1016/j.renene.2016.03.096
  66. Ding, L.K., J. Cheng, A. Xia, A. Jacob, M. Voelklein, and J.D. Murphy, Co-generation of biohydrogen and biomethane through two-stage batch co-fermentation of macro- and micro-algal biomass. Bioresource Technology, 2016. 218: p. 224-231. https://doi.org/10.1016/j.biortech.2016.06.092
  67. Czyrnek-Deletre, M.M., A. Chiodi, J.D. Murphy, and B.P.O. Gallachoir, Impact of including land-use change emissions from biofuels on meeting GHG emissions reduction targets: the example of Ireland. Clean Technologies and Environmental Policy, 2016. 18(6): p. 1745-1758. https://doi.org/10.1007/s10098-016-1145-8
  68. Czyrnek-Deletre, M.M., E.P. Ahern, and J.D. Murphy, Is small-scale upgrading of landfill gas to biomethane for use as a cellulosic transport biofuel economically viable? Biofuels Bioproducts & Biorefining-Biofpr, 2016. 10(2): p. 139-149. https://doi.org/10.1002/bbb.1627
  69. Allen, E., D.M. Wall, C. Herrmann, and J.D. Murphy, A detailed assessment of resource of biomethane from first, second and third generation substrates. Renewable Energy, 2016. 87: p. 656-665. https://doi.org/10.1016/j.renene.2015.10.060
  70. Xia, A., A. Jacob, C. Herrmann, M.R. Tabassum, and J.D. Murphy, Production of hydrogen, ethanol and volatile fatty acids from the seaweed carbohydrate mannitol. Bioresource Technology, 2015. 193: p. 488-497. https://doi.org/10.1016/j.biortech.2015.06.130
  71. Xia, A., C. Herrmann, and J.D. Murphy, How do we optimize third-generation algal biofuels? Biofuels Bioproducts & Biorefining-Biofpr, 2015. 9(4): p. 358-367. https://doi.org/10.1002/bbb.1550
  72. Wall, D.M., B. Straccialini, E. Allen, P. Nolan, C. Herrmann, P. O’Kiely, and J.D. Murphy, Investigation of effect of particle size and rumen fluid addition on specific methane yields of high lignocellulose grass silage. Bioresource Technology, 2015. 192: p. 266-271. https://doi.org/10.1016/j.biortech.2015.05.078
  73. Jacob, A., A. Xia, and J.D. Murphy, A perspective on gaseous biofuel production from micro-algae generated from CO2 from a coal-fired power plant. Applied Energy, 2015. 148: p. 396-402. https://doi.org/10.1016/j.apenergy.2015.03.077
  74. Herrmann, C., J. FitzGerald, R. O’Shea, A. Xia, P. O’Kiely, and J.D. Murphy, Ensiling of seaweed for a seaweed biofuel industry. Bioresource Technology, 2015. 196: p. 301-313. https://doi.org/10.1016/j.biortech.2015.07.098
  75. FitzGerald, J.A., E. Allen, D.M. Wall, S.A. Jackson, J.D. Murphy, and A.D.W. Dobson, Methanosarcina Play an Important Role in Anaerobic Co-Digestion of the Seaweed Ulva lactuca: Taxonomy and Predicted Metabolism of Functional Microbial Communities. Plos One, 2015. 10(11). https://doi.org/10.1371/journal.pone.0142603
  76. Allen, E., D.M. Wall, C. Herrmann, A. Xia, and J.D. Murphy, What is the gross energy yield of third generation gaseous biofuel sourced from seaweed? Energy, 2015. 81: p. 352-360. https://doi.org/10.1016/j.energy.2014.12.048
  77. Ahern, E.P., P. Deane, T. Persson, B.O. Gallachoir, and J.D. Murphy, A perspective on the potential role of renewable gas in a smart energy island system. Renewable Energy, 2015. 78: p. 648-656. https://doi.org/10.1016/j.renene.2015.01.048
  78. Wall, D.M., P. O’Kiely, and J.D. Murphy, DIGESTION OF GRASS SILAGE AND DAIRY SLURRY AT BATCH AND CONTINUOUS SCALE. Papers of the 22nd European Biomass Conference: Setting the Course for a Biobased Economy, ed. C. Hoffman, et al. 2014. 493-497.
  79. Wall, D.M., E. Allen, B. Straccialini, P. O’Kiely, and J.D. Murphy, The effect of trace element addition to mono-digestion of grass silage at high organic loading rates. Bioresource Technology, 2014. 172: p. 349-355. https://doi.org/10.1016/j.biortech.2014.09.066
  80. Wall, D.M., E. Allen, B. Straccialini, P. O’Kiely, and J.D. Murphy, Optimisation of digester performance with increasing organic loading rate for mono- and co-digestion of grass silage and dairy slurry. Bioresource Technology, 2014. 173: p. 422-428. https://doi.org/10.1016/j.biortech.2014.09.126
  81. McEniry, J., E. Allen, J.D. Murphy, and P. O’Kiely, Grass for biogas production: The impact of silage fermentation characteristics on methane yield in two contrasting biomethane potential test systems. Renewable Energy, 2014. 63: p. 524-530. https://doi.org/10.1016/j.renene.2013.09.052
  82. Fierro, J., X. Gomez, and J.D. Murphy, What is the resource of second generation gaseous transport biofuels based on pig slurries in Spain? Applied Energy, 2014. 114: p. 783-789. https://doi.org/10.1016/j.apenergy.2013.08.024
  83. Browne, J.D. and J.D. Murphy, The impact of increasing organic loading in two phase digestion of food waste. Renewable Energy, 2014. 71: p. 69-76. https://doi.org/10.1016/j.renene.2014.05.026
  84. Browne, J.D., E. Allen, and J.D. Murphy, Assessing the variability in biomethane production from the organic fraction of municipal solid waste in batch and continuous operation. Applied Energy, 2014. 128: p. 307-314. https://doi.org/10.1016/j.apenergy.2014.04.097
  85. Allen, E., D.M. Wall, C. Herrmann, and J.D. Murphy, Investigation of the optimal percentage of green seaweed that may be co-digested with dairy slurry to produce gaseous biofuel. Bioresource Technology, 2014. 170: p. 436-444. https://doi.org/10.1016/j.biortech.2014.08.005
  86. Wall, D.M., P. O’Kiely, and J.D. Murphy, The potential for biomethane from grass and slurry to satisfy renewable energy targets. Bioresource Technology, 2013. 149: p. 425-431. https://doi.org/10.1016/j.biortech.2013.09.094
  87. Orozco, A.M., A.S. Nizami, J.D. Murphy, and E. Groom, Optimizing the thermophilic hydrolysis of grass silage in a two-phase anaerobic digestion system. Bioresource Technology, 2013. 143: p. 117-125. https://doi.org/10.1016/j.biortech.2013.05.118
  88. Murphy, J.D. and T. Thamsiriroj, Fundamental science and engineering of the anaerobic digestion process for biogas production, in Biogas Handbook: Science, Production and Applications, A. Wellinger, J. Murphy, and D. Baxter, Editors. 2013. p. 104-130.
  89. Murphy, J.D., J. Browne, E. Allen, and C. Gallagher, The resource of biomethane, produced via biological, thermal and electrical routes, as a transport biofuel. Renewable Energy, 2013. 55: p. 474-479. https://doi.org/10.1016/j.renene.2013.01.012
  90. Gallagher, C. and J.D. Murphy, Is it better to produce biomethane via thermochemical or biological routes? An energy balance perspective. Biofuels Bioproducts & Biorefining-Biofpr, 2013. 7(3): p. 273-281. https://doi.org/10.1002/bbb.1390
  91. Gallagher, C. and J.D. Murphy, What is the realistic potential for biomethane produced through gasification of indigenous Willow or imported wood chip to meet renewable energy heat targets? Applied Energy, 2013. 108: p. 158-167. https://doi.org/10.1016/j.apenergy.2013.03.021
  92. Browne, J.D. and J.D. Murphy, Assessment of the resource associated with biomethane from food waste. Applied Energy, 2013. 104: p. 170-177. https://doi.org/10.1016/j.apenergy.2012.11.017
  93. Browne, J.D., E. Allen, and J.D. Murphy, Evaluation of the biomethane potential from multiple waste streams for a proposed community scale anaerobic digester. Environmental Technology, 2013. 34(13-14): p. 2027-2038. https://doi.org/10.1080/09593330.2013.812669
  94. Browne, J.D., E. Allen, and J.D. Murphy, Improving hydrolysis of food waste in a leach bed reactor. Waste Management, 2013. 33(11): p. 2470-2477. https://doi.org/10.1016/j.wasman.2013.06.025
  95. Baxter, D., A. Wellinger, and J. Murphy, The biogas handbook Science, production and applications Preface, in Biogas Handbook: Science, Production and Applications, A. Wellinger, J. Murphy, and D. Baxter, Editors. 2013. p. XXVII-XXVIII.
  96. Allen, E., J.D. Browne, and J.D. Murphy, Evaluation of the biomethane yield from anaerobic co-digestion of nitrogenous substrates. Environmental Technology, 2013. 34(13-14): p. 2059-2068. https://doi.org/10.1080/09593330.2013.806564
  97. Allen, E., J. Browne, S. Hynes, and J.D. Murphy, The potential of algae blooms to produce renewable gaseous fuel. Waste Management, 2013. 33(11): p. 2425-2433. https://doi.org/10.1016/j.wasman.2013.06.017
  98. Thamsiriroj, T., A.S. Nizami, and J.D. Murphy, Use of modeling to aid design of a two-phase grass digestion system. Bioresource Technology, 2012. 110: p. 379-389. https://doi.org/10.1016/j.biortech.2012.01.113
  99. Thamsiriroj, T., A.S. Nizami, and J.D. Murphy, Why does mono-digestion of grass silage fail in long term operation? Applied Energy, 2012. 95: p. 64-76. https://doi.org/10.1016/j.apenergy.2012.02.008
  100. Nizami, A.S., A. Orozco, E. Groom, B. Dieterich, and J.D. Murphy, How much gas can we get from grass? Applied Energy, 2012. 92: p. 783-790. https://doi.org/10.1016/j.apenergy.2011.08.033
  101. Thamsiriroj, T., H. Smyth, and J.D. Murphy, A roadmap for the introduction of gaseous transport fuel: A case study for renewable natural gas in Ireland. Renewable & Sustainable Energy Reviews, 2011. 15(9): p. 4642-4651. https://doi.org/10.1016/j.rser.2011.07.088
  102. Thamsiriroj, T. and J.D. Murphy, Modelling mono-digestion of grass silage in a 2-stage CSTR anaerobic digester using ADM1. Bioresource Technology, 2011. 102(2): p. 948-959. https://doi.org/10.1016/j.biortech.2010.09.051
  103. Thamsiriroj, T. and J.D. Murphy, The impact of the life cycle analysis methodology on whether biodiesel produced from residues can meet the EU sustainability criteria for biofuel facilities constructed after 2017. Renewable Energy, 2011. 36(1): p. 50-63. https://doi.org/10.1016/j.renene.2010.05.018
  104. Thamsiriroj, T. and J.D. Murphy, A critical review of the applicability of biodiesel and grass biomethane as biofuels to satisfy both biofuel targets and sustainability criteria. Applied Energy, 2011. 88(4): p. 1008-1019. https://doi.org/10.1016/j.apenergy.2010.10.026
  105. Smyth, B.M., H. Smyth, and J.D. Murphy, Determining the regional potential for a grass biomethane industry. Applied Energy, 2011. 88(6): p. 2037-2049. https://doi.org/10.1016/j.apenergy.2010.12.069
  106. Smyth, B.M. and J.D. Murphy, The indirect effects of biofuels and what to do about them: the case of grass biomethane and its impact on livestock. Biofuels Bioproducts & Biorefining-Biofpr, 2011. 5(2): p. 165-184. https://doi.org/10.1002/bbb.276
  107. Singh, A., A.S. Nizami, N.E. Korres, and J.D. Murphy, The effect of reactor design on the sustainability of grass biomethane. Renewable & Sustainable Energy Reviews, 2011. 15(3): p. 1567-1574. https://doi.org/10.1016/j.rser.2010.11.038
  108. Singh, A., P.S. Nigam, and J.D. Murphy, Mechanism and challenges in commercialisation of algal biofuels. Bioresource Technology, 2011. 102(1): p. 26-34. https://doi.org/10.1016/j.biortech.2010.06.057
  109. Singh, A., P.S. Nigam, and J.D. Murphy, Renewable fuels from algae: An answer to debatable land based fuels. Bioresource Technology, 2011. 102(1): p. 10-16. https://doi.org/10.1016/j.biortech.2010.06.032
  110. Nizami, A.S., A. Singh, and J.D. Murphy, Design, Commissioning, and Start-Up of a Sequentially Fed Leach Bed Reactor Complete with an Upflow Anaerobic Sludge Blanket Digesting Grass Silage. Energy & Fuels, 2011. 25(2): p. 823-834. https://doi.org/10.1021/ef101739d
  111. Nizami, A.S. and J.D. Murphy, Optimizing the Operation of a Two-Phase Anaerobic Digestion System Digesting Grass Silage. Environmental Science & Technology, 2011. 45(17): p. 7561-7569. https://doi.org/10.1021/es201357r
  112. Nizami, A.S., S. Molander, Z. Asam, R. Rafique, N.E. Korres, G. Kiely, and J.D. Murphy, Comparative analysis using EIA for developed and developing countries: case studies of hydroelectric power plants in Pakistan, Norway and Sweden. International Journal of Sustainable Development and World Ecology, 2011. 18(2): p. 134-142. https://doi.org/10.1080/13504509.2011.559399
  113. Murphy, J.D. and T. Thamsiriroj, What will fuel transport systems of the future? Materials Today, 2011. 14(11): p. 518-524. https://doi.org/10.1016/s1369-7021(11)70277-2
  114. McEniry, J., P. O’Kiely, P. Crosson, E. Groom, and J.D. Murphy, The effect of feedstock cost on biofuel cost as exemplified by biomethane production from grass silage. Biofuels Bioproducts & Biorefining-Biofpr, 2011. 5(6): p. 670-682. https://doi.org/10.1002/bbb.322
  115. Korres, N.E., T. Thamsiriroj, B.M. Smyth, A.S. Nizami, A. Singh, and J.D. Murphy, Grass Biomethane for Agriculture and Energy, in Genetics, Biofuels and Local Farming System, E. Lichtfouse, Editor. 2011. p. 5-49.
  116. Browne, J., A.S. Nizami, T. Thamsiriroj, and J.D. Murphy, Assessing the cost of biofuel production with increasing penetration of the transport fuel market: A case study of gaseous biomethane in Ireland. Renewable & Sustainable Energy Reviews, 2011. 15(9): p. 4537-4547. https://doi.org/10.1016/j.rser.2011.07.098
  117. Asam, Z.U.Z., T.G. Poulsen, A.S. Nizami, R. Rafique, G. Kiely, and J.D. Murphy, How can we improve biomethane production per unit of feedstock in biogas plants? Applied Energy, 2011. 88(6): p. 2013-2018. https://doi.org/10.1016/j.apenergy.2010.12.036
  118. Thamsiriroj, T. and J.D. Murphy, Can Rape Seed Biodiesel Meet the European Union Sustainability Criteria for Biofuels? Energy & Fuels, 2010. 24(3): p. 1720-1730. https://doi.org/10.1021/ef901432g
  119. Thamsiriroj, T. and J.D. Murphy, Difficulties Associated with Monodigestion of Grass as Exemplified by Commissioning a Pilot-Scale Digester. Energy & Fuels, 2010. 24(8): p. 4459-4469. https://doi.org/10.1021/ef1003039
  120. Thamsiriroj, T. and J.D. Murphy, How much of the target for biofuels can be met by biodiesel generated from residues in Ireland? Fuel, 2010. 89(11): p. 3579-3589. https://doi.org/10.1016/j.fuel.2010.06.009
  121. Smyth, B.M., H. Smyth, and J.D. Murphy, Can grass biomethane be an economically viable biofuel for the farmer and the consumer? Biofuels Bioproducts & Biorefining-Biofpr, 2010. 4(5): p. 519-537. https://doi.org/10.1002/bbb.238
  122. Smyth, B.M., B.P.O. Gallachoir, N.E. Korres, and J.D. Murphy, Can we meet targets for biofuels and renewable energy in transport given the constraints imposed by policy in agriculture and energy? Journal of Cleaner Production, 2010. 18(16-17): p. 1671-1685. https://doi.org/10.1016/j.jclepro.2010.06.027
  123. Singh, A., B.M. Smyth, and J.D. Murphy, A biofuel strategy for Ireland with an emphasis on production of biomethane and minimization of land-take. Renewable & Sustainable Energy Reviews, 2010. 14(1): p. 277-288. https://doi.org/10.1016/j.rser.2009.07.004
  124. Singh, A., D. Pant, N.E. Korres, A.S. Nizami, S. Prasad, and J.D. Murphy, Key issues in life cycle assessment of ethanol production from lignocellulosic biomass: Challenges and perspectives. Bioresource Technology, 2010. 101(13): p. 5003-5012. https://doi.org/10.1016/j.biortech.2009.11.062
  125. Sheehan, C., J. Harrington, and J.D. Murphy, A technical assessment of topsoil production from dredged material. Resources Conservation and Recycling, 2010. 54(12): p. 1377-1385. https://doi.org/10.1016/j.resconrec.2010.05.012
  126. Sheehan, C., J. Harrington, and J.D. Murphy, An environmental and economic assessment of topsoil production from dredge material. Resources Conservation and Recycling, 2010. 55(2): p. 209-220. https://doi.org/10.1016/j.resconrec.2010.09.011
  127. Rafique, R., T.G. Poulsen, A.S. Nizami, Z.U. Asam, J.D. Murphy, and G. Kiely, Effect of thermal, chemical and thermo-chemical pre-treatments to enhance methane production. Energy, 2010. 35(12): p. 4556-4561. https://doi.org/10.1016/j.energy.2010.07.011
  128. Nizami, A.S., T. Thamsiriroj, A. Singh, and J.D. Murphy, Role of Leaching and Hydrolysis in a Two-Phase Grass Digestion System. Energy & Fuels, 2010. 24(8): p. 4549-4559. https://doi.org/10.1021/ef100677s
  129. Nizami, A.S. and J.D. Murphy, What type of digester configurations should be employed to produce biomethane from grass silage? Renewable & Sustainable Energy Reviews, 2010. 14(6): p. 1558-1568. https://doi.org/10.1016/j.rser.2010.02.006
  130. Korres, N.E., A. Singh, A.S. Nizami, and J.D. Murphy, Is grass biomethane a sustainable transport biofuel? Biofuels Bioproducts & Biorefining-Biofpr, 2010. 4(3): p. 310-325. https://doi.org/10.1002/bbb.228
  131. Thamsiriroj, T. and J.D. Murphy, Is it better to import palm oil from Thailand to produce biodiesel in Ireland than to produce biodiesel from indigenous Irish rape seed? Applied Energy, 2009. 86(5): p. 595-604. https://doi.org/10.1016/j.apenergy.2008.07.010
  132. Smyth, B.M., J.D. Murphy, and C.M. O’Brien, What is the energy balance of grass biomethane in Ireland and other temperate northern European climates? Renewable & Sustainable Energy Reviews, 2009. 13(9): p. 2349-2360. https://doi.org/10.1016/j.rser.2009.04.003
  133. Power, N.M. and J.D. Murphy, Which is the preferable transport fuel on a greenhouse gas basis; biomethane or ethanol? Biomass & Bioenergy, 2009. 33(10): p. 1403-1412. https://doi.org/10.1016/j.biombioe.2009.06.004
  134. Nizami, A.S., N.E. Korres, and J.D. Murphy, Review of the Integrated Process for the Production of Grass Biomethane. Environmental Science & Technology, 2009. 43(22): p. 8496-8508. https://doi.org/10.1021/es901533j
  135. Murphy, J.D. and N.M. Power, An argument for using biomethane generated from grass as a biofuel in Ireland. Biomass & Bioenergy, 2009. 33(3): p. 504-512. https://doi.org/10.1016/j.biombioe.2008.08.018
  136. Murphy, J.D. and N. Power, Technical and economic analysis of biogas production in Ireland utilising three different crop rotations. Applied Energy, 2009. 86(1): p. 25-36. https://doi.org/10.1016/j.apenergy.2008.03.015
  137. Power, N., J.D. Murphy, and E. McKeogh, What crop rotation will provide optimal first-generation ethanol production in Ireland, from technical and economic perspectives? Renewable Energy, 2008. 33(7): p. 1444-1454. https://doi.org/10.1016/j.renene.2007.09.019
  138. Murphy, J.D. and N.M. Power, How can we improve the energy balance of ethanol production from wheat? Fuel, 2008. 87(10-11): p. 1799-1806. https://doi.org/10.1016/j.fuel.2007.12.011
  139. Murphy, J.D. and N. Power, A technical, economic, and environmental analysis of energy production from newspaper in Ireland. Waste Management, 2007. 27(2): p. 177-192. https://doi.org/10.1016/j.wasman.2006.01.003
  140. Power, N.M. and J.D. Murphy, Composting of biodegradable municipal waste in Ireland, in Waste Management and the Environment Iii, V. Popov, et al., Editors. 2006. p. 303-312.
  141. Murphy, J.D. and N.M. Power, A technical, economic and environmental comparison of composting and anaerobic digestion of biodegradable municipal waste. Journal of Environmental Science and Health Part a-Toxic/Hazardous Substances & Environmental Engineering, 2006. 41(5): p. 865-879. https://doi.org/10.1080/10934520600614488
  142. Murphy, J.D. and E. McKeogh, The benefits of integrated treatment of wastes for the production of energy. Energy, 2006. 31(2-3): p. 294-310. https://doi.org/10.1016/j.energy.2005.02.003
  143. Murphy, J.D. and E. McKeogh, The benefits of integrated treatment of wastes for the production of energy (vol 31, pg 294, 2006). Energy, 2006. 31(4): p. 547-549. https://doi.org/10.1016/j.energy.2005.08.002
  144. Murphy, J.D. and K. McCarthy, Ethanol production from energy crops and wastes for use as a transport fuel in Ireland. Applied Energy, 2005. 82(2): p. 148-166. https://doi.org/10.1016/j.apenergy.2004.10.004
  145. Murphy, J.D. and K. McCarthy, The optimal production of biogas for use as a transport fuel in Ireland. Renewable Energy, 2005. 30(14): p. 2111-2127. https://doi.org/10.1016/j.renene.2005.02.004
  146. Murphy, J.D., E. McKeogh, and G. Kiely, Technical/economic/environmentaI analysis of blogas utilisation. Applied Energy, 2004. 77(4): p. 407-427. https://doi.org/10.1016/j.apenergy.2003.07.005
  147. Murphy, J.D. and E. McKeogh, Technical, economic and environmental analysis of energy production from municipal solid waste. Renewable Energy, 2004. 29(7): p. 1043-1057. https://doi.org/10.1016/j.renene.2003.12.002

Climate Action

The Blue Economy

  1. Giorgi, S., Davidson, J., Jakobsen, M., Kramer, M. and Ringwood, J.V. Identification of dynamic models for a wave energy converter from experimental data, Ocean Engineering, Vol.183, pp 426-436.
  2. Garcia-Violini, D. and Ringwood, J.V. Robust control of wave energy converters using spectral and pseudospectral models, Proc. American Control Conf.(ACC 2019), Philadelphia, July 2019, pp 4779-4784.
  3. Faedo, N., Scarciotti, G., Astolfi, A. and Ringwood, J.V. Moment-based constrained optimal control of an array of wave energy converters, Proc. American Control Conf.(ACC 2019), Philadelphia, July 2019, pp 4797-4802.
  4. Pena-Sanchez, Y., Faedo, N. and Ringwood, J.V. Moment-based parametric identification of arrays of wave energy converters, Proc. American Control Conf.(ACC 2019), Philadelphia, July 2019, pp 4785-4790.
  5. Windt, C., Faedo, N., Penalba, M. and Ringwood, J.V. Assessment of the evaluation framework for energy maximising control systems for the Wavestar wave energy converter, Proc. American Control Conf.(ACC 2019), Philadelphia, July 2019, pp 4791-4796.
  6. Wang, L. and Ringwood, J.V. Geometric optimisation of a hinge-barge wave energy converter, Proc. European Wave and Tidal Energy Conference, pp 1389-1:1389-10, Naples, Sept. 2019.
  7. Pena, Y., Faedo, N. and Ringwood, J.V. Finite-order hydrodynamic approximation by moment-matching (FOAMM) toolbox for wave energy applications, Proc. European Wave and Tidal Energy Conference, pp 1448-1:1448-9, Naples, Sept. 2019.
  8. Cunningham, J., Faedo, N., Pena, Y. and Ringwood, J.V. Excitation force estimation for wave energy systems using a moment-domain description, Proc. European Wave and Tidal Energy Conference, pp 1418-1:1418-8, Naples, Sept. 2019.
  9. Faedo, N, Pena, Y., Giorgi, G. and Ringwood, J.V. Moment-matching-based parametric approximation for a 6-DoF axisymmetric point absorber WEC, Proc. European Wave and Tidal Energy Conference, pp 1449-1:1449-10, Naples, Sept. 2019.
  10. Kemper, J., Windt, C. and Ringwood, J.V. Development of a nested hydrodynamic model for the numerical analysis of ocean wave energy systems, Proc. European Wave and Tidal Energy Conference, pp 1414-1:1414-10, Naples, Sept. 2019.
  11. Windt, C., Davidson, J., Schmitt, P. and Ringwood, J.V. Contribution to the CCP-WSI Blind Test Series 2: CFD-based numerical wave tank experiments employing an impulse source wave maker, Proc. European Wave and Tidal Energy Conference, pp 1265-1:1265-10, Naples, Sept. 2019.
  12. Auger, C., Merigaud, A. and Ringwood, J.V. Receding-horizon pseudo-spectral control of wave energy converters using periodic basis functions, IEEE Trans. on Sustainable Energy, Vol.10, No.4, pp 1644-1652, 2019.
  13. Garcia-Rosa, P.B., Ringwood, J.V., Fosso, O.B. and Molinas, M. The impact of time-frequency estimation methods on the performance of wave energy converters under passive and reactive control, IEEE Trans. on Sustainable Energy, Vol.10, No.4, pp 1784-1792, 2019.
  14. Wendt, F., Nielsen, K. et al (incl. Ringwood, J.V.) OES wave energy modelling task: Modelling, verification and validation of wave energy converters, Journal of Marine Science and Engineering, Vol.7, Paper # 379, 2019.
  15. Faedo, N., Garcia-Violini, D., Scarciotti, G., Astolfi, A. and Ringwood, J.V. Robust moment-based energy-maximising optimal control of wave energy converters, Proc. CDC, Nice, Dec. 2019, pp 4286-4291.
  16. Windt, C., Davidson, J., Ransley, E.J., Greaves, D., Jakobson, M., Kramer, M. and Ringwood, J.V. Validation of a CFD-based numerical wave tank model of the Wavestar ocean wave energy converter, Renewable Energy, Vol.146, pp 2499-2516, 2020.